On Sun, 19 Oct 1997, Daniel Quinlan wrote:
I would like to do a dump-restore directly from one filer to another. Having not done this before, and having the requirement of doing it right, I'd like to ask if anyone else on the list has experience doing this.
See ftp://ftp.ndmp.org:4000/ndmpcopy/ . You may need to upgrade your F540 to OnTAP 4.2a first though.
| README for ndmpcopy | $Id: README,v 1.2 1997/10/06 18:24:54 grant Exp $ | | Ndmpcopy transfers data between filers using the Network Data | Management Protocol (NDMP). When you use rsh to perform this transfer, | the data flows from the source machine to the rsh host and then again | from the rsh host to the destination machine. This can put a double | load on the network and unneccessary load on the rsh host. With | ndmpcopy, data is transferred directly from the source machine to the | destination machine, and the NDMP host and network are not burdoned | with the extra load. | | When you run ndmpcopy it will contact the NDMP server processes on | the source and destination machines and authenticate the connection. | It will then initiate a backup on the source machine and a restore | on the destination machine. The transfer will happen between the | two machines directly, only burdoning the NDMP host with status | messages instead of all of the backup data. Initial tests have | demonstrated double the performance when using ndmpcopy instead | of rsh. | | COMPATIBILITY NOTE: | | Because of limitations in the NDMP protocol, this program depends on | certain extensions that are not part of the NDMP specification. These | extensions are available in Network Appliance filers running kernel | revision 4.2 or higher. A detailed description of the modifications | required are described in the file CHANGES.PROTOCOL. | | To use ndmpcopy with incremental dump and restore, the NetApp filer | that is the destination is required to run DATA ONTAP revision 4.3 | or higher. [...]